Gjsify LogoGjsify Logo

GtkShortcutController is an event controller that manages shortcuts.

Most common shortcuts are using this controller implicitly, e.g. by adding a mnemonic underline to a GtkLabel, or by installing a key binding using [methodGtk.WidgetClass.add_binding], or by adding accelerators to global actions using [methodGtk.Application.set_accels_for_action].

But it is possible to create your own shortcut controller, and add shortcuts to it.

GtkShortcutController implements GListModel for querying the shortcuts that have been added to it.

GtkShortcutController as a GtkBuildable

GtkShortcutControllers can be creates in ui files to set up shortcuts in the same place as the widgets.

An example of a UI definition fragment with GtkShortcutController:

  <object class='GtkButton'>
<child>
<object class='GtkShortcutController'>
<property name='scope'>managed</property>
<child>
<object class='GtkShortcut'>
<property name='trigger'>&lt;Control&gt;k</property>
<property name='action'>activate</property>
</object>
</child>
</object>
</child>
</object>

This example creates a [classGtk.ActivateAction] for triggering the activate signal of the GtkButton. See [ctorGtk.ShortcutAction.parse_string] for the syntax for other kinds of GtkShortcutAction. See [ctorGtk.ShortcutTrigger.parse_string] to learn more about the syntax for triggers.

Hierarchy

Index

Constructors

Properties

g_type_instance: TypeInstance
mnemonic_modifiers: Gdk.ModifierType

The modifiers that need to be pressed to allow mnemonics activation.

model: Gio.ListModel

A list model to take shortcuts from.

name: string

The name for this controller, typically used for debugging purposes.

propagation_limit: PropagationLimit

The limit for which events this controller will handle.

propagation_phase: Gtk.PropagationPhase

The propagation phase at which this controller will handle events.

What scope the shortcuts will be handled in.

widget: Gtk.Widget

The widget receiving the GdkEvents that the controller will handle.

name: string

Methods

  • Adds shortcut to the list of shortcuts handled by self.

    If this controller uses an external shortcut list, this function does nothing.

    Parameters

    Returns void

  • Creates a binding between source_property on source and target_property on target.

    Whenever the source_property is changed the target_property is updated using the same value. For instance:

      g_object_bind_property (action, "active", widget, "sensitive", 0);
    

    Will result in the "sensitive" property of the widget #GObject instance to be updated with the same value of the "active" property of the action #GObject instance.

    If flags contains %G_BINDING_BIDIRECTIONAL then the binding will be mutual: if target_property on target changes then the source_property on source will be updated as well.

    The binding will automatically be removed when either the source or the target instances are finalized. To remove the binding without affecting the source and the target you can just call g_object_unref() on the returned #GBinding instance.

    Removing the binding by calling g_object_unref() on it must only be done if the binding, source and target are only used from a single thread and it is clear that both source and target outlive the binding. Especially it is not safe to rely on this if the binding, source or target can be finalized from different threads. Keep another reference to the binding and use g_binding_unbind() instead to be on the safe side.

    A #GObject can have multiple bindings.

    Parameters

    • source_property: string

      the property on source to bind

    • target: GObject.Object

      the target #GObject

    • target_property: string

      the property on target to bind

    • flags: BindingFlags

      flags to pass to #GBinding

    Returns Binding

  • Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.

    This function is the language bindings friendly version of g_object_bind_property_full(), using #GClosures instead of function pointers.

    Parameters

    • source_property: string

      the property on source to bind

    • target: GObject.Object

      the target #GObject

    • target_property: string

      the property on target to bind

    • flags: BindingFlags

      flags to pass to #GBinding

    • transform_to: TClosure<any, any>

      a #GClosure wrapping the transformation function from the source to the target, or %NULL to use the default

    • transform_from: TClosure<any, any>

      a #GClosure wrapping the transformation function from the target to the source, or %NULL to use the default

    Returns Binding

  • disconnect(id: number): void
  • emit(sigName: "notify::mnemonic-modifiers", ...args: any[]): void
  • emit(sigName: "notify::model", ...args: any[]): void
  • emit(sigName: "notify::scope", ...args: any[]): void
  • emit(sigName: "notify::name", ...args: any[]): void
  • emit(sigName: "notify::propagation-limit", ...args: any[]): void
  • emit(sigName: "notify::propagation-phase", ...args: any[]): void
  • emit(sigName: "notify::widget", ...args: any[]): void
  • emit(sigName: string, ...args: any[]): void
  • force_floating(): void
  • This function is intended for #GObject implementations to re-enforce a [floating][floating-ref] object reference. Doing this is seldom required: all #GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().

    Returns void

  • freeze_notify(): void
  • Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one #GObject::notify signal is emitted for each property modified while the object is frozen.

    This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.

    Returns void

  • get_buildable_id(): string
  • Gets the ID of the buildable object.

    GtkBuilder sets the name based on the ID attribute of the tag used to construct the buildable.

    Returns string

    • get_current_event_time(): number
    • get_data(key?: string): object
    • Get the item at position.

      If position is greater than the number of items in list, %NULL is returned.

      %NULL is never returned for an index that is smaller than the length of the list.

      This function is meant to be used by language bindings in place of g_list_model_get_item().

      See also: g_list_model_get_n_items()

      Parameters

      • position: number

        the position of the item to fetch

      Returns GObject.Object

    • get_item_type(): GType<unknown>
    • Gets the type of the items in list.

      All items returned from g_list_model_get_item() are of the type returned by this function, or a subtype, or if the type is an interface, they are an implementation of that interface.

      The item type of a #GListModel can not change during the life of the model.

      Returns GType<unknown>

    • get_n_items(): number
    • Gets the number of items in list.

      Depending on the model implementation, calling this function may be less efficient than iterating the list with increasing values for position until g_list_model_get_item() returns %NULL.

      Returns number

    • get_name(): string
    • get_property(property_name?: string, value?: any): void
    • Gets a property of an object.

      The value can be:

      • an empty #GValue initialized by %G_VALUE_INIT, which will be automatically initialized with the expected type of the property (since GLib 2.60)
      • a #GValue initialized with the expected type of the property
      • a #GValue initialized with a type to which the expected type of the property can be transformed

      In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset().

      Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.

      Parameters

      • Optional property_name: string

        the name of the property to get

      • Optional value: any

        return location for the property value

      Returns void

    • get_qdata(quark: number): object
    • getv(names: string[], values: any[]): void
    • Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.

      Parameters

      • names: string[]

        the names of each property to get

      • values: any[]

        the values of each property to get

      Returns void

    • is_floating(): boolean
    • items_changed(position: number, removed: number, added: number): void
    • Emits the #GListModel::items-changed signal on list.

      This function should only be called by classes implementing #GListModel. It has to be called after the internal representation of list has been updated, because handlers connected to this signal might query the new state of the list.

      Implementations must only make changes to the model (as visible to its consumer) in places that will not cause problems for that consumer. For models that are driven directly by a write API (such as #GListStore), changes can be reported in response to uses of that API. For models that represent remote data, changes should only be made from a fresh mainloop dispatch. It is particularly not permitted to make changes in response to a call to the #GListModel consumer API.

      Stated another way: in general, it is assumed that code making a series of accesses to the model via the API, without returning to the mainloop, and without calling other code, will continue to view the same contents of the model.

      Parameters

      • position: number

        the position at which list changed

      • removed: number

        the number of items removed

      • added: number

        the number of items added

      Returns void

    • notify(property_name: string): void
    • Emits a "notify" signal for the property property_name on object.

      When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.

      Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.

      Parameters

      • property_name: string

        the name of a property installed on the class of object.

      Returns void

    • Emits a "notify" signal for the property specified by pspec on object.

      This function omits the property name lookup, hence it is faster than g_object_notify().

      One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with g_object_class_install_property() inside a static array, e.g.:

        enum
      {
      PROP_0,
      PROP_FOO,
      PROP_LAST
      };

      static GParamSpec *properties[PROP_LAST];

      static void
      my_object_class_init (MyObjectClass *klass)
      {
      properties[PROP_FOO] = g_param_spec_int ("foo", "Foo", "The foo",
      0, 100,
      50,
      G_PARAM_READWRITE);
      g_object_class_install_property (gobject_class,
      PROP_FOO,
      properties[PROP_FOO]);
      }

      and then notify a change on the "foo" property with:

        g_object_notify_by_pspec (self, properties[PROP_FOO]);
      

      Parameters

      • pspec: ParamSpec

        the #GParamSpec of a property installed on the class of object.

      Returns void

    • Increases the reference count of object.

      Since GLib 2.56, if GLIB_VERSION_MAX_ALLOWED is 2.56 or greater, the type of object will be propagated to the return type (using the GCC typeof() extension), so any casting the caller needs to do on the return type must be explicit.

      Returns GObject.Object

    • Increase the reference count of object, and possibly remove the [floating][floating-ref] reference, if object has a floating reference.

      In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one.

      Since GLib 2.56, the type of object will be propagated to the return type under the same conditions as for g_object_ref().

      Returns GObject.Object

    • remove_shortcut(shortcut: Shortcut): void
    • Removes shortcut from the list of shortcuts handled by self.

      If shortcut had not been added to controller or this controller uses an external shortcut list, this function does nothing.

      Parameters

      Returns void

    • reset(): void
    • run_dispose(): void
    • set_data(key: string, data?: object): void
    • Each object carries around a table of associations from strings to pointers. This function lets you set an association.

      If the object already had an association with that name, the old association will be destroyed.

      Internally, the key is converted to a #GQuark using g_quark_from_string(). This means a copy of key is kept permanently (even after object has been finalized) — so it is recommended to only use a small, bounded set of values for key in your program, to avoid the #GQuark storage growing unbounded.

      Parameters

      • key: string

        name of the key

      • Optional data: object

        data to associate with that key

      Returns void

    • Sets the controller to use the given modifier for mnemonics.

      The mnemonics modifiers determines which modifiers need to be pressed to allow activation of shortcuts with mnemonics triggers.

      GTK normally uses the Alt modifier for mnemonics, except in GtkPopoverMenus, where mnemonics can be triggered without any modifiers. It should be very rarely necessary to change this, and doing so is likely to interfere with other shortcuts.

      This value is only relevant for local shortcut controllers. Global and managed shortcut controllers will have their shortcuts activated from other places which have their own modifiers for activating mnemonics.

      Parameters

      Returns void

    • set_name(name: string): void
    • set_property(property_name: string, value?: any): void
    • Sets the controller to have the given scope.

      The scope allows shortcuts to be activated outside of the normal event propagation. In particular, it allows installing global keyboard shortcuts that can be activated even when a widget does not have focus.

      With %GTK_SHORTCUT_SCOPE_LOCAL, shortcuts will only be activated when the widget has focus.

      Parameters

      Returns void

    • steal_data(key?: string): object
    • steal_qdata(quark: number): object
    • This function gets back user data pointers stored via g_object_set_qdata() and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:

      void
      object_add_to_user_list (GObject *object,
      const gchar *new_string)
      {
      // the quark, naming the object data
      GQuark quark_string_list = g_quark_from_static_string ("my-string-list");
      // retrieve the old string list
      GList *list = g_object_steal_qdata (object, quark_string_list);

      // prepend new string
      list = g_list_prepend (list, g_strdup (new_string));
      // this changed 'list', so we need to set it again
      g_object_set_qdata_full (object, quark_string_list, list, free_string_list);
      }
      static void
      free_string_list (gpointer data)
      {
      GList *node, *list = data;

      for (node = list; node; node = node->next)
      g_free (node->data);
      g_list_free (list);
      }

      Using g_object_get_qdata() in the above example, instead of g_object_steal_qdata() would have left the destroy function set, and thus the partial string list would have been freed upon g_object_set_qdata_full().

      Parameters

      • quark: number

        A #GQuark, naming the user data pointer

      Returns object

    • thaw_notify(): void
    • Reverts the effect of a previous call to g_object_freeze_notify(). The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.

      Duplicate notifications for each property are squashed so that at most one #GObject::notify signal is emitted for each property, in the reverse order in which they have been queued.

      It is an error to call this function when the freeze count is zero.

      Returns void

    • unref(): void
    • Decreases the reference count of object. When its reference count drops to 0, the object is finalized (i.e. its memory is freed).

      If the pointer to the #GObject may be reused in future (for example, if it is an instance variable of another object), it is recommended to clear the pointer to %NULL rather than retain a dangling pointer to a potentially invalid #GObject instance. Use g_clear_object() for this.

      Returns void

    • vfunc_constructed(): void
    • Similar to gtk_buildable_parser_finished() but is called once for each custom tag handled by the buildable.

      virtual

      Parameters

      • builder: Gtk.Builder

        a GtkBuilder

      • child: GObject.Object

        child object or %NULL for non-child tags

      • tagname: string

        the name of the tag

      • data: object

        user data created in custom_tag_start

      Returns void

    • Called at the end of each custom element handled by the buildable.

      virtual

      Parameters

      • builder: Gtk.Builder

        GtkBuilder used to construct this object

      • child: GObject.Object

        child object or %NULL for non-child tags

      • tagname: string

        name of tag

      • data: object

        user data that will be passed in to parser functions

      Returns void

    • vfunc_dispatch_properties_changed(n_pspecs: number, pspecs: ParamSpec): void
    • vfunc_dispose(): void
    • vfunc_finalize(): void
    • vfunc_get_id(): string
    • Get the item at position. If position is greater than the number of items in list, %NULL is returned.

      %NULL is never returned for an index that is smaller than the length of the list. See g_list_model_get_n_items().

      virtual

      Parameters

      • position: number

        the position of the item to fetch

      Returns GObject.Object

    • vfunc_get_item_type(): GType<unknown>
    • Gets the type of the items in list.

      All items returned from g_list_model_get_item() are of the type returned by this function, or a subtype, or if the type is an interface, they are an implementation of that interface.

      The item type of a #GListModel can not change during the life of the model.

      virtual

      Returns GType<unknown>

    • vfunc_get_n_items(): number
    • Gets the number of items in list.

      Depending on the model implementation, calling this function may be less efficient than iterating the list with increasing values for position until g_list_model_get_item() returns %NULL.

      virtual

      Returns number

    • vfunc_get_property(property_id: number, value?: any, pspec?: ParamSpec): void
    • Emits a "notify" signal for the property property_name on object.

      When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.

      Note that emission of the notify signal may be blocked with g_object_freeze_notify(). In this case, the signal emissions are queued and will be emitted (in reverse order) when g_object_thaw_notify() is called.

      virtual

      Parameters

      Returns void

    • vfunc_set_buildable_property(builder: Gtk.Builder, name: string, value: any): void
    • vfunc_set_id(id: string): void
    • vfunc_set_property(property_id: number, value?: any, pspec?: ParamSpec): void
    • watch_closure(closure: TClosure<any, any>): void
    • This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling g_closure_invalidate() on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, g_object_ref() and g_object_unref() are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.

      Parameters

      • closure: TClosure<any, any>

        #GClosure to watch

      Returns void

    • compat_control(what: number, data: object): number
    • Find the #GParamSpec with the given name for an interface. Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().

      Parameters

      • g_iface: TypeInterface

        any interface vtable for the interface, or the default vtable for the interface

      • property_name: string

        name of a property to look up.

      Returns ParamSpec

    • Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created #GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.

      This function is meant to be called from the interface's default vtable initialization function (the class_init member of #GTypeInfo.) It must not be called after after class_init has been called for any object types implementing this interface.

      If pspec is a floating reference, it will be consumed.

      Parameters

      • g_iface: TypeInterface

        any interface vtable for the interface, or the default vtable for the interface.

      • pspec: ParamSpec

        the #GParamSpec for the new property

      Returns void

    • Lists the properties of an interface.Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().

      Parameters

      • g_iface: TypeInterface

        any interface vtable for the interface, or the default vtable for the interface

      Returns ParamSpec[]

    • Creates a new shortcut controller that takes its shortcuts from the given list model.

      A controller created by this function does not let you add or remove individual shortcuts using the shortcut controller api, but you can change the contents of the model.

      Parameters

      Returns Gtk.ShortcutController

    • Creates a new instance of a #GObject subtype and sets its properties.

      Construction parameters (see %G_PARAM_CONSTRUCT, %G_PARAM_CONSTRUCT_ONLY) which are not explicitly specified are set to their default values.

      Parameters

      • object_type: GType<unknown>

        the type id of the #GObject subtype to instantiate

      • parameters: GObject.Parameter[]

        an array of #GParameter

      Returns GObject.Object

    Legend

    • Module
    • Object literal
    • Variable
    • Function
    • Function with type parameter
    • Index signature
    • Type alias
    • Type alias with type parameter
    • Enumeration
    • Enumeration member
    • Property
    • Method
    • Interface
    • Interface with type parameter
    • Constructor
    • Property
    • Method
    • Index signature
    • Class
    • Class with type parameter
    • Constructor
    • Property
    • Method
    • Accessor
    • Index signature
    • Inherited constructor
    • Inherited property
    • Inherited method
    • Inherited accessor
    • Protected property
    • Protected method
    • Protected accessor
    • Private property
    • Private method
    • Private accessor
    • Static property
    • Static method